Registration Dossier
Registration Dossier
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EC number: 500-058-1 | CAS number: 27252-75-1 1 - 2.5 moles ethoxylated
Surface tension
Administrative data
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 6 Dec 2018 - 6 Feb 2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 019
- Report date:
- 2019
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- GLP compliance:
- no
- Remarks:
- study conducted in a facility which operates in accordance with Good Laboratory Practice principles; however, no claim of GLP compliance was intended nor is made for this study
- Type of method:
- ring method
Test material
- Reference substance name:
- Octan-1-ol, ethoxylated
- EC Number:
- 500-058-1
- EC Name:
- Octan-1-ol, ethoxylated
- Cas Number:
- 27252-75-1
- Molecular formula:
- C10H22O2
- IUPAC Name:
- Octan-1-ol, ethoxylated
- Test material form:
- liquid
Constituent 1
Results and discussion
Surface tension
- Surface tension:
- 32.6 mN/m
- Temp.:
- 20 °C
- Conc.:
- 1 g/L
- Remarks on result:
- other: substance is surface active
Any other information on results incl. tables
The detailed results are shown in the table:
Sample |
Age of solution (min) |
Reading (mN/m) |
1 |
72 |
33.0 |
76 |
32.5 |
|
80 |
32.5 |
|
84 |
32.5 |
|
88 |
32.5 |
|
mean |
32.6 |
|
2 |
101 |
32.5 |
105 |
32.5 |
|
108 |
32.5 |
|
112 |
32.5 |
|
115 |
32.5 |
|
mean |
32.5 |
pH of both samples: 4.9
Concentration corresponds to the water solubility result (1.85 g/L) obtained in another experiment. For such well soluble in water substances (exceeding 1 g/L), the concentration of 1 g/L is appropriate.
Discussion:
On removal from the 20 °C equilibration, the samples were visually assessed as clear and colourless liquids free from undissolved test item.
The surface tension at nominally 1 g/L of test item in water has been determined to be 32.6 mN/m at 20.0 ± 0.5 °C. The test item was considered to be surface-active (surface tension < 60 mN/m).
Applicant's summary and conclusion
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